On Wed, Sep 12, 2012 at 4:02 PM, Richard Guenther wrote: > for a followup (and I bet sth else than PRE blows up at -O2 as well).
Actually, the only thing that really blows up is that enemy of scalability, VRP.
With -O2 -fno-tree-{pre,fre,vrp}, the slowest part of the compiler on
this test case are dominance computation, dominator-based
optimization, and tree CFG cleanup, but they all scale linearly with
the number of X'es in the test case :-)
Ciao!
Steven
